823280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:305

約数の個数: 40

約数和(自身を含む): 1968624

約数和(自身を除く): 1145344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 251, 328, 410, 502, 656, 820, 1004, 1255, 1640, 2008, 2510, 3280, 4016, 5020, 10040, 10291, 20080, 20582, 41164, 51455, 82328, 102910, 164656, 205820, 411640, 823280]

約数ペア:

[(1, 823280), (2, 411640), (4, 205820), (5, 164656), (8, 102910), (10, 82328), (16, 51455), (20, 41164), (40, 20582), (41, 20080), (80, 10291), (82, 10040), (164, 5020), (205, 4016), (251, 3280), (328, 2510), (410, 2008), (502, 1640), (656, 1255), (820, 1004)]